the two main contents of air are _____and _____
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Answer:
Nitrogen, Oxygen.
Explanation:
The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.). Higher in the atmosphere air also contains ozone, helium and hydrogen.
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Answered by
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Answer:
Nitrogen and Oxygen
Explanation:
The two main contents of air are Nitrogen and Oxygen.
Nitrogen is 78% and Oxygen is 21% approximately.
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